Bulletin - United States National Museum - Smithsonian Institution

82 FLORA OF WASHINGTON AND VICINITY.
UMBELLIFERiE.
Parsley Family.
Hydrocotyle ranunculoides, L. Water Pennywort.
Spriugy place above the Outlet Lock. May to July.
t Hydrocotyle Americana, L.
July.
tEryngium Virginianum, Lam. Eryngo. Button Snakeroot.
September.
Sanicula Canadensis, L. Sanicle. Black Snakeroot.
June.
t Sanicula Marylandica, L.
Woodley Park. June.
Erigenia bulbosa, Nutt. Harbinger-of-Spring.
High Island. Last of March or first of April.
t Cicuta maculata, L. Spotted Cowbane. Musquash-Root. Water-Hemlock.
Juue to July.
tSium cicutaefolium, Gmel. ISimn linem-e, Michx.] Water-Parsnip.
September.
tPimpinella integerrima, Benth. &, Hook. IZizia integerrima, DC]
Mfij to June.
t Cryptotaenia Canadensis, DC. Honewort.
June.
Osmorrhiza longistylis, DC. Sweet Cicely.
Last half of May.
Osmorrhiza brevistylis, DC.
High Island. Last week in May.
t Chaerophyllum procumbens, Crantz. Chervil.
. First
half of May.
Discopleura capillacea, DC. Mock Bishop-weed.
Custis Spring. Third week in August.
tThaspium barbinode, Nutt. Meadow-Parsnip.
June to August.
t Thaspium aureum, Nutt.
Higli Island. April; fruit in June or July.
tThaspium trifoliatum, Gray.
April; fruit in August.
Archangelica hirsuta, Torr. & Gray.
July ; fruit in September.
Pastinaca saiiva, L. Parsnip.
Georgetown. June.